system.cc (5330:a1db38b0d8e8) | system.cc (5450:25e395a87745) |
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1/* | 1/* |
2 * Copyright (c) 2007 The Hewlett-Packard Development Company | 2 * Copyright (c) 2007-2008 The Hewlett-Packard Development Company |
3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * 9 * The software must be used only for Non-Commercial Use which means any 10 * use which is NOT directed to receiving any direct monetary --- 52 unchanged lines hidden (view full) --- 63#include "mem/physical.hh" 64#include "params/LinuxX86System.hh" 65 66 67using namespace LittleEndianGuest; 68using namespace X86ISA; 69 70LinuxX86System::LinuxX86System(Params *p) | 3 * All rights reserved. 4 * 5 * Redistribution and use of this software in source and binary forms, 6 * with or without modification, are permitted provided that the 7 * following conditions are met: 8 * 9 * The software must be used only for Non-Commercial Use which means any 10 * use which is NOT directed to receiving any direct monetary --- 52 unchanged lines hidden (view full) --- 63#include "mem/physical.hh" 64#include "params/LinuxX86System.hh" 65 66 67using namespace LittleEndianGuest; 68using namespace X86ISA; 69 70LinuxX86System::LinuxX86System(Params *p) |
71 : X86System(p), commandLine(p->boot_osflags) | 71 : X86System(p), commandLine(p->boot_osflags), e820Table(p->e820_table) |
72{ 73} 74 75LinuxX86System::~LinuxX86System() 76{ 77} 78 79void --- 59 unchanged lines hidden (view full) --- 139 */ 140 141 // A pointer to the number of E820 entries there are. 142 const Addr e820MapNrPointer = realModeData + 0x1e8; 143 144 // A pointer to the buffer for E820 entries. 145 const Addr e820MapPointer = realModeData + 0x2d0; 146 | 72{ 73} 74 75LinuxX86System::~LinuxX86System() 76{ 77} 78 79void --- 59 unchanged lines hidden (view full) --- 139 */ 140 141 // A pointer to the number of E820 entries there are. 142 const Addr e820MapNrPointer = realModeData + 0x1e8; 143 144 // A pointer to the buffer for E820 entries. 145 const Addr e820MapPointer = realModeData + 0x2d0; 146 |
147 struct e820Entry 148 { 149 Addr addr; 150 Addr size; 151 uint32_t type; 152 }; | 147 e820Table->writeTo(physPort, e820MapNrPointer, e820MapPointer); |
153 | 148 |
154 // The size is computed this way to ensure no padding sneaks in. 155 int e820EntrySize = 156 sizeof(e820Entry().addr) + 157 sizeof(e820Entry().size) + 158 sizeof(e820Entry().type); 159 160 // I'm not sure what these should actually be. On a real machine they 161 // would be generated by the BIOS, and they need to reflect the regions 162 // which are actually available/reserved. These values are copied from 163 // my development machine. 164 e820Entry e820Map[] = { 165 {ULL(0x0), ULL(0x9d400), 1}, 166 {ULL(0x9d400), ULL(0xa0000) - ULL(0x9d400), 2}, 167 {ULL(0xe8000), ULL(0x100000) - ULL(0xe8000), 2}, 168 {ULL(0x100000), ULL(0xcfff9300) - ULL(0x100000), 1}, 169 {ULL(0xcfff9300), ULL(0xd0000000) - ULL(0xcfff9300), 2}, 170 {ULL(0xfec00000), ULL(0x100000000) - ULL(0xfec00000), 2} 171 }; 172 173 uint8_t e820Nr = sizeof(e820Map) / sizeof(e820Entry); 174 175 // Make sure the number of entries isn't bigger than what the kernel 176 // would be capable of providing. 177 assert(e820Nr <= 128); 178 179 uint8_t guestE820Nr = X86ISA::htog(e820Nr); 180 physPort->writeBlob(e820MapNrPointer, 181 (uint8_t *)&guestE820Nr, sizeof(guestE820Nr)); 182 183 for (int i = 0; i < e820Nr; i++) { 184 e820Entry guestE820Entry; 185 guestE820Entry.addr = X86ISA::htog(e820Map[i].addr); 186 guestE820Entry.size = X86ISA::htog(e820Map[i].size); 187 guestE820Entry.type = X86ISA::htog(e820Map[i].type); 188 physPort->writeBlob(e820MapPointer + e820EntrySize * i, 189 (uint8_t *)&guestE820Entry.addr, 190 sizeof(guestE820Entry.addr)); 191 physPort->writeBlob( 192 e820MapPointer + e820EntrySize * i + 193 sizeof(guestE820Entry.addr), 194 (uint8_t *)&guestE820Entry.size, 195 sizeof(guestE820Entry.size)); 196 physPort->writeBlob( 197 e820MapPointer + e820EntrySize * i + 198 sizeof(guestE820Entry.addr) + 199 sizeof(guestE820Entry.size), 200 (uint8_t *)&guestE820Entry.type, 201 sizeof(guestE820Entry.type)); 202 } 203 | |
204 /* 205 * Pass the location of the real mode data structure to the kernel 206 * using register %esi. We'll use %rsi which should be equivalent. 207 */ 208 threadContexts[0]->setIntReg(INTREG_RSI, realModeData); 209} 210 211LinuxX86System * 212LinuxX86SystemParams::create() 213{ 214 return new LinuxX86System(this); 215} | 149 /* 150 * Pass the location of the real mode data structure to the kernel 151 * using register %esi. We'll use %rsi which should be equivalent. 152 */ 153 threadContexts[0]->setIntReg(INTREG_RSI, realModeData); 154} 155 156LinuxX86System * 157LinuxX86SystemParams::create() 158{ 159 return new LinuxX86System(this); 160} |